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perf header: Prepare tracepoint events regardless of name

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Current perf_evlist__set_tracepoint_names is a misnomer because it finds
and sets correspoding event_format in addition to the name.  So skipping
it when a event has set name already caused a trouble.

Rename it and set name only a event doesn't have one.

Reported-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1346897446-16569-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2012-09-06 11:10:46 +09:00 committed by Arnaldo Carvalho de Melo
parent ae42c6bb93
commit 831394bdd9
1 changed files with 22 additions and 14 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
tools/perf/util/header.c
View file

@ -2295,33 +2295,39 @@ static int read_attr(int fd, struct perf_header *ph,
return ret <= 0 ? -1 : 0;
}
static int perf_evsel__set_tracepoint_name(struct perf_evsel *evsel,
struct pevent *pevent)
static int perf_evsel__prepare_tracepoint_event(struct perf_evsel *evsel,
struct pevent *pevent)
{
struct event_format *event = pevent_find_event(pevent,
evsel->attr.config);
struct event_format *event;
char bf[128];
/* already prepared */
if (evsel->tp_format)
return 0;
event = pevent_find_event(pevent, evsel->attr.config);
if (event == NULL)
return -1;
snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name);
evsel->name = strdup(bf);
if (evsel->name == NULL)
return -1;
if (!evsel->name) {
snprintf(bf, sizeof(bf), "%s:%s", event->system, event->name);
evsel->name = strdup(bf);
if (evsel->name == NULL)
return -1;
}
evsel->tp_format = event;
return 0;
}
static int perf_evlist__set_tracepoint_names(struct perf_evlist *evlist,
struct pevent *pevent)
static int perf_evlist__prepare_tracepoint_events(struct perf_evlist *evlist,
struct pevent *pevent)
{
struct perf_evsel *pos;
list_for_each_entry(pos, &evlist->entries, node) {
if (pos->attr.type == PERF_TYPE_TRACEPOINT && !pos->name &&
perf_evsel__set_tracepoint_name(pos, pevent))
if (pos->attr.type == PERF_TYPE_TRACEPOINT &&
perf_evsel__prepare_tracepoint_event(pos, pevent))
return -1;
}
@ -2409,7 +2415,8 @@ int perf_session__read_header(struct perf_session *session, int fd)
lseek(fd, header->data_offset, SEEK_SET);
if (perf_evlist__set_tracepoint_names(session->evlist, session->pevent))
if (perf_evlist__prepare_tracepoint_events(session->evlist,
session->pevent))
goto out_delete_evlist;
header->frozen = 1;
@ -2643,7 +2650,8 @@ int perf_event__process_tracing_data(union perf_event *event,
if (size_read + padding != size)
die("tracing data size mismatch");
perf_evlist__set_tracepoint_names(session->evlist, session->pevent);
perf_evlist__prepare_tracepoint_events(session->evlist,
session->pevent);
return size_read + padding;
}